Woody peat soil improvement mixture, preparation method and application

Abstract

The invention provides a woody peat soil improvement mixture as well as a preparation method and application thereof. The woody peat soil improvement mixture comprises a woody peat soil conditioner, an organic fertilizer and a microbial activator. The weight ratios of the woody peat soil conditioner, the organic fertilizer and the microbial activator are respectively recorded as a, b and c, the sum of the ratio of a and b is about 95-96%, and the ratio of c is about 4-5%. According to the woody peat soil improvement mixture, the half-life period of the woody peat soil improvement mixture on the effect of soil organic matter can be controlled by regulating and controlling the proportion of the woody peat soil improvement agent and the organic fertilizer, and meanwhile multiple technical requirements of soil fertility improvement, water saving, fertilizer saving, greenness, organic property and the like can be met; by regulating and controlling the half-life period of organic matter of the soil improvement mixed material, rapid activation of a soil plough layer for planting the lycium barbarum is improved, transformation from number expansion to quality improvement is facilitated, economic income of lycium barbarum farmers is increased, and environmental and ecological maintenance is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of improvement and management of gravel land, saline-alkali land, sandy loam and clay soil, and in particular to a woody peat soil improvement mixture, a preparation method and application thereof. Background Art

[0002] Goji berry cultivation is primarily distributed in the Ningxia Hui Autonomous Region, Qinghai Province, Gansu Province, Xinjiang Uyghur Autonomous Region, and Inner Mongolia Autonomous Region, and is a pillar industry in these provinces and autonomous regions. However, these regions suffer from severe desertification and salinization, and the soil fertility of goji berry cultivation sites is generally low. Whether in gravel saline-alkali land, sandy loam, completely barren land, or abandoned land used for goji berry cultivation, the soil organic matter content (OMC) rarely exceeds 5g / kg. This is extremely deficient in organic matter and cannot sustain normal growth of goji berries, a perennial plant. In areas where goji berries have been cultivated for many years, the soil organic matter content (OMC) rarely exceeds 10g / kg. This is extremely deficient in organic matter and cannot sustain normal growth, let alone high-quality organic goji berry cultivation. Existing soil improvement formulas for cultivation mostly use traditional sheep manure as a base fertilizer. The organic matter in sheep manure has a half-life of approximately six months to one year, which is insufficient for normal growth of goji berries. At the same time, the phenomenon of abandoning land after wolfberry planting due to low soil fertility is common, which seriously hinders the high-quality development of the wolfberry industry and affects regional social and economic development. To this end, a woody peat soil improvement mixture, preparation method and application are proposed. Summary of the Invention

[0003] In view of this, the present invention provides a woody peat soil improvement mixture, a preparation method and an application thereof, so as to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0004] The technical solution of the present invention is achieved as follows: a woody peat soil improvement mixture includes a woody peat soil conditioner, organic fertilizer, and a microbial stimulant. The weight proportions of the woody peat soil conditioner, organic fertilizer, and microbial stimulant are respectively denoted as a, b, and c, wherein the sum of a and b accounts for approximately 95% to 96%, and c accounts for approximately 4% to 5%.

[0005] Further preferably, the organic fertilizer can be pure decomposed sheep manure, or a mixture of decomposed sheep manure and straw organic fertilizer.

[0006] Further preferably, the ratio of the sum of a and b can be adjusted, which can control the half-life of the effect of the woody peat soil improvement mixture on soil organic matter.

[0007] In addition, the present invention also provides a method for preparing and applying a woody peat soil improvement mixture, comprising the following steps:

[0008] Step 1: Soil survey and sampling: Soil survey includes the longitude and latitude coordinates of the soil boundary vertex, altitude, irrigation water source, and soil physical properties. Based on the soil survey, the sampling area is divided into several sampling units, with each unit being 10 to 30 mu.

[0009] Step 2: Soil testing and evaluation: General soil testing items include pH value, soluble salt concentration (EC), organic matter content, and total salt content. Special items may also include testing of alkaline-hydrolyzable nitrogen, available phosphorus, and available potassium, and the results of soil testing may be evaluated.

[0010] Step 3, calculation and correction of the amount of soil improvement mixture: determine the amount of woody peat soil improvement mixture based on the wolfberry planting row spacing, plant spacing and planting density, the volume of the planting ditch or planting hole, the soil organic matter content, the soil pH value, the soluble salt concentration EC value and the total salt content; calculate according to the soil organic matter content balance formula, the soil volume to be improved is 1 unit (1m3), the tapped density is 1.75g / cm3, the background value of the soil organic matter content is recorded as OMC', and the target value of the improved soil organic matter content is recorded as OMC"; the organic content of the soil improvement mixture is recorded as OMCsm; the following balance formula is available:

[0011] (1750+Q sm )×OMC″=1750×OMC′+Q sm ×OMC sm

[0012] Q in the formula sm is the weight of the woody peat soil amendment mixture, in kg;

[0013] In addition, the soil improvement intensity for wolfberry cultivation is corrected as follows:

[0014] Q sm =5.493×(OMC″–OMC′)+δQ

[0015] In the formula

[0016] Q sm The soil improvement intensity for wolfberry planting, unit is kg / m 3 ;

[0017] OMC′ is the background value of soil organic matter content, in g / kg;

[0018] OMC″ is the target value of soil organic matter content, in g / kg;

[0019] δQ is the correction amount of the weight of the woody peat soil improvement mixture added due to the deterioration of three soil indicators: pH value, EC value and total salt content, as well as other adverse soil environmental factors.

[0020] Step 4: Improve the field for wolfberry planting and dig wolfberry planting ditches or planting holes: remove all debris from wasteland, abandoned land, and land to be planted, deep plow 2 to 3 times and level the planting land, while removing the debris that has been plowed up; dig planting ditches or planting holes with a width or diameter of 40 cm and a depth of 40 cm; if the soil is highly salinized, the excavation depth can reach 50 cm to 60 cm; a layer of desulfurized gypsum is also required.

[0021] Step 5, applying woody peat soil improvement mixture to improve the soil of planting trenches or planting holes and planting wolfberry seedlings: laying a certain thickness of organic fertilizer on the bottom of the excavated planting trenches or planting holes, and then applying the woody peat soil improvement mixture into the planting trenches or planting holes, and at the same time backfilling the excavated soil with the woody peat soil improvement mixture that has been applied into the planting trenches or planting holes and planting wolfberry seedlings; finally, covering the surface of the planted wolfberry seedlings with original soil to form a windbreak layer;

[0022] Further preferably, in step 1, when the surface soil to be sampled is complex, one sampling unit selects multiple sampling points; when the surface soil is uniform, one sampling unit selects fewer sampling points.

[0023] Further preferably, in step three, the volume of soil improvement for each wolfberry seedling or mature tree is obtained from the boundary conditions of its planting, and the soil improvement intensity for each wolfberry planting is corrected according to the following formula:

[0024] q sm =5.493×(OMC″–OMC′)×v sm +δq

[0025] In the formula

[0026] q sm The soil improvement intensity for single wolfberry plant, unit is kg / plant;

[0027] OMC′ is the background value of soil organic matter content, in g / kg;

[0028] OMC″ is the target value of soil organic matter content, in g / kg;

[0029] v sm The volume of soil improvement for a single wolfberry plant, in m 3 / strain;

[0030] δq is the correction amount of the weight of the peat soil improvement mixture for a single wolfberry tree due to the deterioration of three soil indicators: pH value, EC value and total salt content, as well as other adverse soil environmental factors, and the unit is kg / tree.

[0031] Further preferably, in step three, the boundary conditions include the acres of soil improvement, the density of wolfberry planting and the volume of planting ditches or planting holes, and the organic matter content of the soil; if the woody peat soil improvement mixture is used for seedling supplementation, the boundary conditions also include the amount of seedling supplementation.

[0032] Further preferably, in step four, a salt-alkali barrier layer with a thickness of 10 cm to 30 cm is applied to the bottom of the fixed ditch or fixed hole where the degree of soil salinization is very high, and a layer of desulfurization gypsum is also laid on the bottom. The thickness of the desulfurization gypsum is determined according to the degree of soil salinity.

[0033] Further preferably, in step 4, the salt-alkali barrier layer is made of locally selected materials, such as decomposed or semi-decomposed straw and sheep manure, to prevent the capillary action of the soil and block the upward migration of salt and alkali in the soil.

[0034] Further preferably, in step five, the soil volume excavated by the fixed-value ditch or fixed-value hole is 40 cm wide × 40 cm deep, and the weight of the woody peat soil improvement mixture is calculated according to the organic matter content balance formula.

[0035] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0036] 1. The woody peat soil improvement mixture used in the present invention can control the half-life of the effect of the woody peat soil improvement mixture on soil organic matter by regulating the proportion of the woody peat soil conditioner and the organic fertilizer, thereby meeting the requirement of rapid activation of the cultivated layer. At the same time, the organic fertilizer adopts local simple decomposed sheep manure, or a mixture of decomposed sheep manure and straw organic fertilizer, thereby reducing economic cost expenditure.

[0037] 2. The woody peat soil improvement mixture and soil mixing used in the present invention can quickly transform wolfberry fields with high salinization and very poor soil fertility into high-yield orchards, and at the same time meet multiple technical requirements such as soil fertility improvement, water saving, fertilizer saving, and green organic. By regulating the half-life of organic matter in the soil improvement mixture, the soil tillage layer for wolfberry planting is quickly activated, which helps to transform from quantity expansion to quality improvement, is beneficial to increase the economic income of wolfberry growers, and is beneficial to the maintenance of the environment and ecology.

[0038] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 It is a block diagram of the soil improvement steps of the present invention.

[0041] Figure 2 This is a typical growth diagram of the wolfberry seedlings of the present invention after one month of planting.

[0042] Figure 3 This is a typical growth diagram of the wolfberry seedlings of the present invention after being planted for one and a half months.

[0043] Figure 4 This is a typical growth diagram of the wolfberry seedlings of the present invention after being planted for two and a half months.

[0044] Figure 5 This is a typical growth diagram of the wolfberry seedlings of the present invention after being planted for three and a half months.

[0045] Figure 6 This is a typical growth diagram of the wolfberry seedlings of the present invention after being planted for five months. DETAILED DESCRIPTION

[0046] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0047] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0048] like Figure 1-6 As shown, a woody peat soil improvement mixture includes a woody peat soil conditioner, organic fertilizer, and microbial stimulant. The weight proportions of the woody peat soil conditioner, organic fertilizer, and microbial stimulant are respectively denoted as a, b, and c, wherein the sum of a and b accounts for approximately 95% to 96%, and c accounts for approximately 4% to 5%.

[0049] In one embodiment, the woody peat soil conditioner is prepared from natural high-quality humus peat through activation, chelation and other processes. Its microstructure is very similar to that of fertile black soil under electron microscope scanning. It has a high organic matter content, an average dry basis content of 89%, good stability, and a half-life of at least 80 years. It has a high humus content, an average dry basis content of 53%, is loose and porous, and is weakly acidic. Compared with the organic matter in traditional conditioners, the organic matter in the woody peat soil conditioner can be released slowly and effectively without secondary pollution. Organic fertilizer can be selected locally as an auxiliary material for soil improvement. For areas where straw organic fertilizer is scarce, decomposed sheep manure or a mixture of decomposed sheep manure and straw organic fertilizer can be used. The proportion of the sum of a and b in the woody peat soil improvement mixture can be adjusted to control the half-life of the effect of the woody peat soil improvement mixture on soil organic matter for wolfberry planting. In addition, the half-life of organic matter refers to the time required for organic matter to decompose to half of its original amount under specific conditions. Specifically, the half-life of soil organic matter refers to the time required for the amount of organic matter in the soil to be reduced to half of its initial amount during the decomposition process; the half-life of soil organic matter is affected by many factors, including temperature, humidity, microbial activity, soil type, etc.; for example, the application of poultry manure can accelerate the decomposition of soil organic matter, thereby shortening the half-life of soil organic matter; when the proportion of a is 0, the half-life of soil organic matter becomes the half-life of organic fertilizer, which is about one year; when the proportion of b is 0, it is the half-life of woody peat, which is at least 80 years;

[0050] In addition, the present invention also provides a method for preparing and applying a woody peat soil improvement mixture, comprising the following steps:

[0051] Step 1: Soil investigation and sampling: Soil investigation includes the longitude and latitude coordinates of the soil boundary vertex, altitude, irrigation water source and physical properties of the soil. Based on the soil investigation, the sampling range is divided into several sampling units, with 10 to 30 mu as one sampling unit. The samples taken should be representative enough. If the soil properties are poorly uniform, more samples should be taken.

[0052] Step 2: Soil testing and evaluation: General soil testing items include pH, soluble salt concentration (EC), organic matter content, and total salt content. Special items may also include testing for alkaline-hydrolyzable nitrogen, available phosphorus, and available potassium. All test results need to be evaluated; the evaluation results are mainly used for calculations and corrections in step 3.

[0053] Step 3: Calculation and correction of the amount of soil improvement mixture. The amount of woody peat soil improvement mixture is determined based on the wolfberry planting density, the volume of the planting ditch or planting hole, and the soil organic matter content, soil pH value, soluble salt concentration EC value and total salt content. According to the soil organic matter content balance formula, the volume of the soil to be improved is 1 unit (1m3) and the tap density is 1.75g / cm3 The background value of soil organic matter content is recorded as OMC′, the target value of soil organic matter content after improvement is recorded as OMC″; the organic content of soil improvement mixture is recorded as OMC sm ; There are the following equilibrium formulas:

[0054] (1750+Q sm )×OMC″=1750×OMC′+Q sm ×OMC sm

[0055] Where Qsm is the weight of the woody peat soil amendment mixture, in kg;

[0056] In addition, the soil improvement intensity for wolfberry cultivation is corrected as follows:

[0057] Q sm =5.493×(OMC″–OMC′)+δQ

[0058] In the formula

[0059] Q sm The soil improvement intensity for wolfberry planting, unit is kg / m 3 ;

[0060] OMC′ is the background value of soil organic matter content, in g / kg;

[0061] OMC″ is the target value of soil organic matter content, in g / kg;

[0062] δQ is the correction amount of the weight of the woody peat soil improvement mixture added due to the deterioration of three soil indicators: pH value, EC value and total salt content, as well as other adverse soil environmental factors.

[0063] Step 4: Improve the field for wolfberry planting and dig wolfberry planting ditches or planting holes: remove all debris from wasteland, abandoned land, and land to be planted, deep plow 2 to 3 times, and level the planting land. At the same time, remove the debris that has been plowed up; dig planting ditches or planting holes with a width or diameter of 40 cm and a depth of 40 cm; if the soil is highly salinized, the excavation depth can reach 50 cm to 60 cm; and lay a layer of desulfurized gypsum, the thickness of which is determined according to the degree of soil salinization;

[0064] Step 5: Apply woody peat soil improvement mixture to improve the soil in the planting trench or hole and plant wolfberry seedlings:

[0065] Example 1: lay a certain thickness of organic fertilizer on the bottom of the excavated planting ditch or planting hole, and then apply the woody peat soil improvement mixture into the planting ditch or planting hole; backfill the excavated soil and mix it with the soil improvement mixture applied into the planting ditch or planting hole; and plant wolfberry seedlings; finally, cover the surface of the planted wolfberry seedlings with original soil to form a windbreak layer.

[0066] Example 2: Apply woody peat soil amendment mixture directly to the bottom of the excavated planting trench or planting hole;

[0067] Backfill the excavated soil and mix it with the soil improvement mixture that has been applied to the planting trench or planting hole; and plant wolfberry seedlings; finally, cover the surface of the planted wolfberry seedlings with original soil to form a windbreak layer.

[0068] In one embodiment, in order to achieve the expected effect of soil improvement, it is necessary to provide evaluation criteria for the quality of wolfberry cultivation soil; one is the soil fertility grade (used for calculating the strength of soil improvement), and the other is the degree of soil salinization (used for correcting the strength of soil improvement). In order to achieve the sustainable development requirements of the wolfberry cultivation soil environment and refer to the years of experience in establishing wolfberry high-yield gardens, the soil fertility of wolfberry cultivation soil can be divided according to the organic matter content (OMC):

[0069] Table 1 Evaluation criteria for soil organic matter content (OMC)

[0070]

[0071]

[0072] The degree of soil salinization is shown in Table 2. pH value, EC value and total salt content are auxiliary indicators for evaluating soil quality.

[0073] Table 2 Evaluation criteria for soil pH, EC value and total salt content

[0074]

[0075] In one embodiment, soil sampling is performed in accordance with the principles set forth in NY / T 1121.1-2006 "Soil Testing Part 1: Collection, Processing, and Storage of Soil Samples." Specifically, in step 1, when the surface soil to be sampled is complex, multiple sampling points are selected for one sampling unit; when the surface soil is uniform, fewer sampling points are selected for one sampling unit. For soil testing in step 2, soil microbial diversity, soil heavy metals, and other indicators are added for comparison in response to special soil improvements.

[0076] In one embodiment, particularly in step 3, the volume of soil improvement for each wolfberry seedling or mature tree is obtained from the boundary conditions of its planting, and the soil improvement intensity for each wolfberry plant is corrected according to the following formula:

[0077] q sm =5.493×(OMC″-OMC′)×v sm +δq

[0078] In the formula

[0079] q sm The soil improvement intensity for single wolfberry plant, unit is kg / plant;

[0080] OMC′ is the background value of soil organic matter content, in g / kg;

[0081] OMC″ is the target value of soil organic matter content, in g / kg;

[0082] v sm The volume of soil improvement for a single wolfberry plant, in m 3 / strain;

[0083] δq is the correction amount of the weight of the woody peat soil amendment mixture for a single wolfberry plant due to the deterioration of the three soil indicators of pH, EC value, and total salt content, as well as other adverse soil environmental factors, and the unit is kg / plant. In step three, the boundary conditions include the mu of soil improvement, the row and plant spacing of wolfberry planting, the volume of the planting furrow or planting hole, and the content of soil organic matter. If the woody peat soil amendment mixture is used for seedling supplementation, the boundary conditions also include the amount of seedling supplementation.

[0084] In addition, the calculated input value of the woody peat soil improvement mixture should be revised when the following situations occur: one or more of the soil sample test items, pH value, soluble salt concentration EC value, and total salt content exceed the standard; or when the wolfberry tree is replaced by seedlings after dying due to root rot to improve the stress resistance of the seedlings;

[0085] In one embodiment, especially in step 4, for the debris on completely wasteland, abandoned land, and land to be planted, such as large rocks, garbage, tree trunks, and plant roots, the tree trunks and plant roots can be crushed into granular organic matter, and then the granular organic matter can be sprayed with pest and disease prevention agents before being returned to the field. Scientifically returning the vegetation on completely wasteland, abandoned land, and land to be planted with wolfberry can increase the organic matter content of the soil; among them, for the soil improvement of fixed-value ditches, since the amount of improved earthwork is large, it can effectively support the long-term growth of wolfberry trees; for the soil improvement of fixed-value holes, the amount of improved soil is small, and the cost will be much lower, which can meet the growth of wolfberry seedlings within 3 years. However, when the root growth range exceeds the hole radius, the growth may be hindered, and it is necessary to add woody peat soil improvement mixture after 3 to 4 years.

[0086] In one embodiment, especially in step 4, a salt-alkali barrier layer with a thickness of 10 cm to 30 cm is applied to the bottom of the fixed ditch or fixed hole with a very high degree of soil salinization. The salt-alkali barrier layer is selected locally, and decomposed or semi-decomposed straw and decomposed sheep manure are selected to prevent the capillary action of the soil and serve as the bottom bed for soil improvement. At the same time, it also blocks the upward migration of salt and alkali in the soil. If the degree of soil salinization is high, a layer of desulfurized gypsum can be laid at the bottom. In step 5, the soil volume excavated in the fixed ditch or fixed hole is 0 cm to 40 cm deep. The volume of excavated soil and the weight of woody peat soil improvement mixture are calculated based on the balance formula of organic matter content; when uniformly improving the soil of fixed-value ditches and fixed-value holes, a certain thickness of biological organic fertilizer is laid on the bottom of the fixed-value ditches and fixed-value holes to form a salt-alkali barrier layer (a layer of desulfurization gypsum is needed when necessary) as the base bed for soil improvement, and then the soil excavated at a depth of 0cm to 40cm is backfilled and mixed with the soil improvement mixture that has been applied to the planting ditch or planting hole, and then wolfberry seedlings are planted immediately; finally, it is covered with original soil to form a windbreak layer.

[0087] In addition, the daily growth of wolfberry seedlings during the growth period, δg, can be broken down into the sum of four types of daily growth: root δg1, main stem δg2, branches and leaves δg3, and fruit δg4. The main stem daily growth δg2 is an important parameter that can be used to characterize the effectiveness of soil improvement. The benefit of calculating and comparing the main stem daily growth δg2 is that it facilitates field measurements. Furthermore, the seedling market uses the main stem diameter, approximately 10 cm from the root, as a characteristic value for the health of wolfberry seedlings, with 0.5, 0.3, and 0.2 seedling sizes being common.

[0088] Table 3A Daily growth of the main stem of the first group of wolfberry seedlings

[0089] Group 1, a total of 4 plants. On completely barren, gravel, and saline-alkali land, a 40 cm x 40 cm U-shaped trench was created. A woody peat soil amendment mix was applied to both the bottom and top. The amount of woody peat soil amendment mix was approximately 25% greater than in Group 2. All seedlings were 0.5 cm in diameter.

[0090]

[0091]

[0092] Table 3B Daily growth of the main stem of the second group of wolfberry seedlings

[0093] The second group, consisting of four plants, was located on completely barren, gravel, and saline-alkali land. A 40 cm x 40 cm U-shaped ditch was used. Sheep manure was applied to the bottom and a woody peat soil amendment mix was applied to the top. All seedlings were 0.5 cm in diameter.

[0094]

[0095]

[0096] Table 3C Daily growth of the main stem of the third group of wolfberry seedlings

[0097] The third group, consisting of four plants, was located on abandoned land, gravel, and saline-alkali soil. A 40cm wide and 40cm deep V-shaped trench was used. Sheep manure was applied to the bottom and the soil was backfilled above. No soil improvement was performed. All seedlings were 0.5cm in diameter.

[0098]

[0099]

[0100] The following conclusions can be drawn from Table 3A, Table 3B, and Table 3C:

[0101] The average growth of the first group of 4 plants was as high as 621mm 3 / d, and half a year after planting, 3 out of 4 plants were still growing despite the cold snap, with a growth rate of 77mm. 3 / d~485mm 3 The first group of 4 plants showed very good stability growth indicators after being amended with woody peat mixture and in the harsh natural environment of the Qinghai-Tibet Plateau.

[0102] The average growth of the 4 plants in the second group was 306 mm. 3 / day, only half the average growth rate of the first four plants. Around October, all four plants stopped growing their main stems. The second four plants' stable growth indicators were not as good as those of the first four plants, but far better than those of the third four plants.

[0103] The average main stem growth of the four plants in the third group was only 4mm 3 / d, and the growth stability at each time period is extremely poor. The effect of applying only local sheep manure to improve the gravel saline-alkali land is very weak.

[0104] In addition, the improvement technology of wolfberry planting soil can also be applied to the breeding of wolfberry seedlings; since the breeding density of wolfberry seedlings is significantly higher than that of wolfberry trees, the goal of improving the soil for wolfberry seedling breeding should be set within the range of 15g / kg<OMC≤20g / kg, or even higher; after transplanting the seedlings, the soil fertility should be evaluated, and some soil improvement fertilizers or conditioners should be added to solve the problem of the need for land rotation after transplanting; this wolfberry planting soil improvement technology can also be applied to sowing wolfberry seeds, planting wolfberry branches and leaves, and using them as green fodder for livestock.

[0105] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A woody peat soil improvement mixture, characterized in that: The invention comprises a woody peat soil conditioner, an organic fertilizer and a microbial stimulant, wherein the weight proportions of the woody peat soil conditioner, the organic fertilizer and the microbial stimulant are respectively denoted as a, b and c, wherein the sum of a and b accounts for about 95% to 96%, and c accounts for about 4% to 5%.

2. The woody peat soil improvement mixture according to claim 1, characterized in that: The organic fertilizer can be pure decomposed sheep manure, or a mixture of decomposed sheep manure and straw organic fertilizer.

3. The woody peat soil improvement mixture according to claim 1, characterized in that: The ratio of the sum of a and b can be adjusted, and the half-life of the effect of the woody peat soil improvement mixture on soil organic matter can be controlled.

4. A method for preparing and applying a woody peat soil improvement mixture according to claims 1-3, characterized in that: The following steps are involved: Step 1: Soil survey and sampling: Soil survey includes the longitude and latitude coordinates of the soil boundary vertex, altitude, irrigation water source, and soil physical properties. Based on the soil survey, the sampling area is divided into several sampling units, with each unit being 10 to 30 mu. Step 2: Soil testing and evaluation: General soil testing items include pH value, soluble salt concentration (EC), organic matter content, and total salt content. Special items may also include testing of alkaline-hydrolyzable nitrogen, available phosphorus, and available potassium, and the results of soil testing may be evaluated. Step 3: Calculation and correction of the amount of soil improvement mixture: Determine the amount of woody peat soil improvement mixture based on the wolfberry planting row spacing, plant spacing and planting density, the volume of the planting ditch or planting hole, the soil organic matter content, the soil pH value, the soluble salt concentration EC value and the total salt content and the physical properties of the soil; Calculate according to the soil organic matter content balance formula, the volume of the soil to be improved is 1 unit (1m 3 ), tap density 1.75g / cm 3 The background value of soil organic matter content is recorded as OMC′, the target value of soil organic matter content after improvement is recorded as OMC″; the organic content of soil improvement mixture is recorded as OMC sm ; There are the following equilibrium formulas: (1750+Q sm )×OMC″=1750×OMC′+Q sm ×OMC sm Q in the formula sm is the weight of the woody peat soil amendment mixture, in kg; In addition, the soil improvement intensity for wolfberry cultivation is corrected as follows: Q sm =5.493×(OMC″–OMC′)+δQ In the formula Q sm The soil improvement intensity for wolfberry planting, unit is kg / m 3 ; OMC′ is the background value of soil organic matter content, in g / kg; OMC″ is the target value of soil organic matter content, in g / kg; δQ is the correction amount of the weight of the woody peat soil improvement mixture due to the deterioration of the three soil indicators of pH, EC value and total salt content and other adverse soil environmental factors; Step 4: Improve the wolfberry planting field and dig wolfberry planting ditches or planting holes: remove debris from completely barren land, abandoned land, and land to be planted, deep plow 2 to 3 times and level the planting land, while removing the debris that has been plowed up; dig planting ditches or planting holes with a width or diameter of 40 cm and a depth of 40 cm; if the soil is highly salinized, the excavation depth can reach 50 cm to 60 cm; and lay a layer of desulfurized gypsum; Step five, apply woody peat soil improvement mixture to improve the soil in the planting ditch or hole and plant wolfberry seedlings: lay a certain thickness of organic fertilizer on the bottom of the excavated planting ditch or planting hole, and then apply the woody peat soil improvement mixture into the planting ditch or planting hole, and at the same time backfill the excavated soil and mix it with the woody peat soil improvement mixture that has been applied into the planting ditch or planting hole and plant wolfberry seedlings; finally, cover the surface of the planted wolfberry seedlings with original soil to form a windbreak layer.

5. The method for preparing and applying a woody peat soil improvement mixture according to claim 4, characterized in that: In step 1, when the surface soil to be sampled is complex, multiple sampling points are selected for one sampling unit; when the surface soil is uniform, fewer sampling points are selected for one sampling unit.

6. The method for preparing and applying a woody peat soil improvement mixture according to claim 4, characterized in that: In step 3, the volume of soil improvement for each wolfberry seedling or mature tree is obtained from the boundary conditions of its planting, and the soil improvement intensity of each wolfberry planting is corrected as follows: q sm =5.493×(OMC″–OMC′)×v sm +δq In the formula q sm The soil improvement intensity for single wolfberry plant, unit is kg / plant; OMC′ is the background value of soil organic matter content, in g / kg; OMC″ is the target value of soil organic matter content, in g / kg; v sm The volume of soil improvement for a single wolfberry plant, in m 3 / strain; δq is the correction amount of the weight of the peat soil improvement mixture for a single wolfberry tree due to the deterioration of three soil indicators: pH value, EC value and total salt content, as well as other adverse soil environmental factors, and the unit is kg / tree.

7. The method for preparing and applying a woody peat soil improvement mixture according to claim 6, characterized in that: In step three, the boundary conditions include the number of acres of soil improvement, the row and plant spacing of wolfberry planting, and the volume of planting ditches or planting holes; if the woody peat soil improvement mixture is used for seedling supplementation, the boundary conditions also include the amount of seedling supplementation.

8. The method for preparing and applying a woody peat soil improvement mixture according to claim 4, characterized in that: In step 4, a salt-alkali barrier layer with a thickness of 10 cm to 30 cm is applied to the bottom of the fixed ditch or fixed hole where the soil salinization degree is very high. The thickness of the desulfurization gypsum is determined according to the salinity of the soil.

9. The method for preparing and applying a woody peat soil improvement mixture according to claim 8, characterized in that: In step 4, the salt-alkali barrier layer is made of locally selected materials, such as decomposed or semi-decomposed straw and sheep dung, to prevent the capillary action of the soil and block the upward migration of salt and alkali in the soil.

10. The method for preparing and applying a woody peat soil improvement mixture according to claim 4, characterized in that: In step 5, the soil volume excavated by the fixed-value ditch or fixed-value hole is 40 cm deep × 40 cm wide, and the weight of the woody peat soil improvement mixture is calculated according to the organic matter content balance formula.

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